Yep, about to get much worse. One can imagine that FB purposely doesn't fix any reported bugs on FB, IG, WA because they see that as a feature to extract more user data despite all the privacy features they provide on the surface.
Basically any data-hungry organisation will always have a backdoor that they hope will not be discovered. FB though is more brazen about it.
Brace yourselves. Facebook has a new mega-leak on its hands
Facebook Email Search v1.0 can process 5 million email addresses per day, researcher says.
arstechnica.com